Temperature Scales Quiz with Answers PDF Download – Test 137

MCQ 681: An unmarked laboratory thermometer has l₁₀₀ 9 cm and l₀ is 4 cm. If the l_θ is 6 cm the temperature of the thermometer would be:

1. 20 °C
2. 40 °C
3. 60 °C
4. 80 °C

MCQ 682: Resistance of a steel wire at ice point is 70 Ω and 110 Ω at steam point, and resistance of wire is 71 Ω room temperature would be:

1. 2.5 °C
2. 5 °C
3. 7.5 °C
4. 10 °C

MCQ 683: Speed of light in vacuum is:

1. 0.3 × 10⁷ m s^-1
2. 3 × 10⁷ m s^-1
3. 30 × 10⁷ m s^-1
4. None of the above

MCQ 684: Rate of evaporation increases as:

1. the exposed surface area of the liquid increases
2. the exposed surface area of the liquid decreases
3. the movement of air above the surface of the liquid decreases
4. atmospheric pressure increases

MCQ 685: Electromagnetic waves obey the law of:

1. refraction only
2. reflection and refraction both
3. reflection only
4. momentum